Gatorade Lemon Lime 20 Ounce. Gatorade is a smart choice for athletes because it rehydrates, replenishes and refuels in ways water can't. Gatorade is scientifically formulated to rapidly replace what athletes lose during activity so they can perform at their best. Its proprietary formula of electrolytes, carbohydrates, and flavor – developed and tested since 1965 – is the optimal hydration solution to use before, during, and after training and competition.